Pump



Sept. 18, 1945. B. SAMELSON 2,385,105

PUMP

Filed April 12, 1944 2 Sheets-Sheet l 4 258N420 JAMH 50/ BY fizzy/ laz ng mall! I N VEN TOR.

Patented Sept. 18, 1945 PUMP Bernard Samelson, Salem, Ohio, assignor to The Deming Company, Salem, Ohio, a corporation of Ohio Application April 12, 1944, Serial No. 530,621

9 Claims.

The invention relates to a pump of the deep well type, wherein a pumping unit is located some distance below the surface and is operated by means above the surface to raise the liquid and discharge the same at a region above the surface. One of the objects of the invention is to so form such a pumping device that the pumping unit may be readily withdrawn for cleaning or repair without disturbing the connection to the discharge pipe above the surface.

Another object is to so direct the pumped liquid that it will pass from the well pipe upwardly into the pump head and then downwardly for connection to the discharge pipe, thereby providing space for the accumulation of vapors from the pumped liquid, there being a suitable by-pass to return such vapors to the supply. The pump is accordingly especially well adapted for raising volatile liquid-gasoline, for instancefrom a tank containing the same and discharging such liquid without danger or interference from the.

vapors thereof. The by-pass also prevents heating of the fluid in the pump if the pump is running with the discharge valve closed.

In its preferred form my pump is of the turbine type and includes an impeller below the surface on a vertical shaft, which is rotated by a motor above the pump head, and it is an object of the invention to provide such a pump in a simple and effective form which may be readily assembled or disassembled without disturbing the connections to the supply tank or the discharge pipe.

The invention is hereinafter more fully explained in connection with a description of the preferred embodiment illustrated in the drawings.

In the drawings, Fig. l is a sectional side elevation of the driving and discharge portion of my pump and a portion of the parts leading below the surface or into the tank; Fig. 2 is a vertical section of a preferred multiple pumping unit located below the surface; Fig.'3 is a horizontal section through the accumulation chamber in the pump head and the communicating discharging passageway, the section being in offset planes indicated by the line 3--3 on Fig. 1; Fig. 4 is a detail showing the control of the by-pass being a vertical section at right angles to Fig. 1, as indicated by the line 4-4 on Fig. 3.

In Fig. 1, ill indicates the horizontally extending portion of a member which may be the top of a tank or a plate at the surface of the ground having an opening H for the passage of the pumping device from about the plate to the region below it. 12 indicates a suitable collar on the underside of the plate I0 and 20 a casting on the upper side of the plate. These two parts are suitably secured together by bolts l4 passing through the plate. Suitable annular gaskets l5 and I6 above and below the plate insure a liquid tight connection of these parts with the plate. A suitable sleeve I8 may screw into the collar l2 and extend some distance downwardly into the tank for below the plate l2 to provide an air trap in the top of the tank.

The casting 20 above referred to has a flat bottom wall 2| and a flat top wall 22 and a substantially cylindrical wall 23 connecting these parts, leaving a central vertical opening 24 extending from top to bottom.

Secured to the top of the base is a closure head which rests on the top of the base and is tightly secured thereto by bolts 3|. This closure head which carries the delivery pipe 40 and the pumping mechanism will be hereinafter described in detail. At present it should be noted that it contains a chamber 33 in communication with the delivery pipe 40 and extendin horizontally in an annular form and having a downward extension 34 leading to the bottom of the head. This extension registers with an upward passageway 25 in the base leading from a chamber 26 in the base to the top surface thereof.

0 This chamber 26 terminates in an orifice at the side of the base which is surrounded by a base portion having a fiat vertical wall 28.

The external discharge pipe is indicated at 50 in Fig. 1. It has a flange 5| mating with the vertical face 28 of the base to which it is secured by cap screw 52 through an interposed annular gasket 54. It will be seen that the tight gasket connections of the base with the tank at the bottom of the base and with the discharge pipe at the side of the base are entirely independent of the closure head which rests on the base and carries the entire pumping mechanism. This enables the removal of the latter without disturbing the connections to the supply or the discharging pipe.

The closure head 33 above referred to comprises a suitable casting having a bottom wall 32 with a flat underface making a tight connection with the fiat face of the base to which it is secured. This head 39 has a top plate-like portion 35 .and an annular external wall 36 connecting it with the bottom portion.

A tubular portion 31 extends, from the bottom downwardly into the base, leaving an annular space 38 between them, and carries the delivery pipe 40 shown as screwing such tubular portion. The delivery pipe carries, at its lower end, the pumping unit in the well or supply tank as hereinafter described.

A tubular portion 39 of the closure head extends downwardly from the top a short distance and surrounds the pump shaft Ill, and carries a seal therefor, later explained. There is thus provided the annular hamber 33 heretofore mentioned.

Resting on the head 33 is the annular motor support 30 which at its lower end has an outward annular flange GI engaging the top of the head 30 to which it is secured by cap screws 62. The motor casing 83 is suitably bolted to a flange 54 at the top of this annular support.

The motor has a shaft 35, which may be the armature shaft of the motor, and extends downwardly vertically. This shaft is coupled to the pump shaft l which extends through the head and through the base and down below the plate IE to operate the pumping unit,

As shown the shaft 10 has at its upper end a collar II which has a bearing in the top of the pump head 33. I have shown a thrust hearing 12 of the ball-type with suitable closures mounted in part in a recess in the top of the pump head and in part on the collar. The motorshaft 65 carries at its lower end a collar 66 which is suitably coupled to the collar 'II of the shaft ID. This coupling is preferably somewhat flexible and, as shown, comprises discs I pinned at diametric points as I6 to the collar II and pinned at two other points, 90 distant from the points I5, to the motor-shaft *collar 66, though other type of coupling may be employed if desired.

The pump shaft extends downwardly .from the pump head through a suitable packing unit carried within the head and furnishing a seal for the rotary shaft. As shown, this seal includes a gasket 30 hearing against the lower end of the head extension 39 and a collar 8! surrounding the shaft and bearing against the gasket and stationary in operation. An engaging collar 82 rotatable with the shaft, a spring 83 surrounding the shaft and bearing against the latter collar, and a collar 83 clamped to the shaft and compressing the spring completes the unit and makes a rotary seal for the shaft.

The pumping unit carried by the delivery pipe 40 is, in the form shown, of multi-stage turbine type and comprising a series of impellers operated by the shaft Ill and each discharging into the impeller unit above it, the topmost unit discharging into the delivery pipe i0. Fig. 2 shows three of the impeller units A, B and C, just alike, the bottom unit C receives its supply at the lower end of the device, discharges into the unit B, which discharges into the unit A, the latter unit being coupled to a sleeve 93 which is screwed onto the lower end of the pipe 43. The casing of the unit A is shown as screwing into the sleeve 93, the casing of the unit B screwing into the unit A, and the casing of the unit C into the unit B. At the lower end of the unit C is a hollow intake fitting D.

As shown each impeller unit comprises an impeller I30 mounted tightly on the shaft l0, ta-- pering clamping means being shown to effect the clamping. Each impeller is shown as having a conical form with an annular row of veins on its conical surface, so that it receives liquid from the underside in the annular region about the shaft and discharges upwardly and outwardly.

The discharge from the impeller of each unit is conducted upwardly by conduits IilI leading to the space beneath the surmounting impeller. Suitable packing I02 about the shaft prevents passage of the raised liquid downwardly along the shaft, so that the liquid is eventually delivered into the chamber within the sleeve 90 and thence up through the delivery pipe 40.

The hollow intake filling B at the lower end of the bottommost impeller unit C is shown as a tubular fitting I35 which screws into the frame of the bottom unit C and carries a protecting wall 536 at its lower end. Suitable intake openings Iill are made through the wall of this unit and are shown as surrounded by a foraminous screen I38. A clean-out plug I39 is provided at the bottom of the fitting.

It will be seen that when the motor is operated and the shaft Ill thereby rotated, the impellers r, left liquid entering through the screen I05 upwardly through the pipe 43 into the annular passageway 33 in the head 33, thence downwardly through the passageways 34 and 23 and 22 to the discharge pipe 59.

If the pump is used for pumping of volatile liquid such as gasoline, for instance, vapors thereof, which might interfere with pumping action accumulate in the liquid in the annular chamber 33. that chamber by by-passing liquid back into the tank or other region below the plate II] to relieve the pump of such vapors, and I provide means to control the b y-pass thus provided so that an unnecessary amount of liquid will not be transferred back to the supply.

The by-pass and its control are best illustrated in Figs. 3 and 4. As there shown there is a hori- Zontal passageway I20 in the head 30 communicating at its inner end with the topmost region of the annular chamber 33, and a vertical passageway I2! leading downwardly from the passageway I20 and discharging through a registering passageway I22 in the top wall of the base 23 into the annular space 38 between the wall 23 of this \base and the sleeve 31 of the head. This venting passageway is controlled by a plug valve I25 shown as threaded in the head 30 extending across the passageway I2I snugly into the passageway I23.

A squared end I26 on the plug I25 allows it to be readily turned by a socket wrench to uncover just the desired amount of the passageway I2I. A suitable cap I28 screwing tightly into the head ill upon an interposed gasket surrounds the exposed end of the plug I25 and prevents any escape of gas along it and also prevents I may work past the packing unit 89 to 84 about the shaft, I may provide a-passageway I30, Fig. l,

' within an embracing tubular portion of the head 33 leading to an opening I3I through the top of the base casting and thence into the annular passageway 38 about the head sleeve 31.

It will be seen that when the pumping device,

I provide suitable means to vent.

as illustrated in Fig. 1, has been mounted on the tank or other support and coupled to. the discharge pipe, in liquid tight manner, such connections need never be disturbed. In case any repairs or cleaning is needed in the pumping unit the mere removal of the bolts 3| allows the withdrawal of the pumping units with the pump head. and motor, thus rendering the pumping units accessible. When so removed the detachment of the shaft and the unscrewing of the delivery pipe provides access to the packing seal about the shaft. I thus provide for the detachability from an attached base at one time all the pumping elements below the base and the driving mechanism above it.

Furthermore, my provision of the passageway for a liquid first upwardly to a region above the discharge conduit and then downwardly into such conduit not only enables the ready separation described but gives the further advantageous feature of preventing the accumulation of troublesome vapors in the liquid. By providing the chamber into which such vapors may accumulate and then returning them to the tank or other supply, I provide a safer and better operation for the device, and by accurately limiting the material by-passed back to the supply, I accomplish this result without reducing the efiiciency of the pump, as any loss by this by-passing action is much more than compensated by the gain in avoiding troublesome vapors.

I claim:

1. In a pump, the combination of a hollow base having openings at the bottom and top and having a chamber with a lateral orifice and an admission opening through the top of the base, a hollow head resting on the base having a downwardly extending tubular portion within the base and a chamber within the head communicating,

with the tubular portion and with the upward opening in the base, a supply pipe attached to the tubular portion of the head, and means for pumping liquid upwardly through the supply pipe into the head and thence downwardly into the base and outwardly to the discharge conduit.

2. In a pump, the combination of a hollow base open at the top and bottom, means for securing the base to a tank or other member on which it may rest, a removable head mounted on the top of the base, said head having a downwardly extending tubular portion within the hollow oi the base, a chamber within the tubular portion which at its upper end enlarges laterally which lateral portion has a downward extension, a discharge chamber and orifice in the base communicating with such downward extension, a deliv-- ery pipe secured to the downward tubular portion of the head, an impeller pumping unit mounted on the lower end of the delivery pipe a shaft in the delivery pipe extending above and below it and adjacent its lower end connected to the impeller of the pumping unit, a collar on said shaft rotatably mounted in a bearing on the upper side of said removable head, and a motor mounted on the upper side of said head and having its shaft coupled with the shaft first mentioned.

3. In a pump, the combination of a hollow base open at the top and bottom, a chamber in the base having a lateral discharge orifice and having an admission passageway leading to it from the top of the base, a head removably resting on the base and having an annular chamber with a downward extension communicating with the admission passageway to the chamber in the base,

a bearing mounted on said head, a shaft rotatably mounted in said bearing, said head having an internal tubular portion surrounding the shaft, a seal embracing the shaft and engaging such tubular portion, a delivery pipe secured to the head and depending through the base, a pumping unit carried by the delivery pipe at its lower end and operated by said shaft.

4. In a pump, the combination of a hollow casing adapted to be secured to a support,.a delivery pipe leading from below the support up- Wardly to a chamber in the casing, means for forcing fluid up the delivery pipe, a passageway within the casing from said chamber'outwardly and then downwardly to a dischargechamber and a controlled passageway from the first mentioned chamber independent of said discharge chamber.

5. In a pump, the combination of a hollow casing adapted to be mounted on a support, a delivery-pipe extending from a region within the casing through the support to a region below it, a pumping unit connected to the delivery pipe below the support, a chamber within the casing in communication with the upper end of the delivery pipe, said chamber having an enlarged upper portion communicating downwardly with a discharge chamber, and a controlled by-pass leading from the enlarged chamber to a space outside of the delivery pipe. I

6. In a pump, the combination of a hollow casing adapted to be securedto a support, a delivery pipe leading from below the support upwardly into the casing, a pumping unit adjacent the lower end of the delivery pipe, a passageway within the casing from the upper end of the delivery pipe upwardly and outwardly and then downwardly to a discharge chamber, and a bypass from said passageway in the easing into the space between the casing and delivery pipe.

'7. In a pump, the combination of a base having an internal chamber open above and below and adapted to be secured at its lower end to a support about an opening therein, a separate chamber in the base having a discharge orifice and having an admission passageway, a head removably mounted on the base and having a chamber with a discharge portion communicating with the admission passageway to the discharge chamber in the base, said head having an internal tubular portion extending downwardly into the chamber thereof to make the upper portion of said chamber annular, a delivery pipe carried by the head and communicating with the head chamber, a by-pass from said annular portion of the head chamber to the space about the delivery pipe, a valve operated from the exterior for controlling the by-pass, a pumping unit carried by the delivery pipe below the support, and a shaft having a bearing mounted on the head and extending downwardly through said tubular portion of the head to the movable member of a pumping unit carried by the delivery pipe.

8. In a pump, the combination of a base adapted to be secured to a support and having a chamber open above and below, a head mounted above the support and having a chamber, a delivery pipe carried by the head and extending downwardly through the support, a pumping unit carried by the delivery pipe below the support, a shaft having a bearing in the head, said head having a tubular portion below the bearing surrounding the shaft, a rotary seal having a portion embracing the shaft and a coacting portion mounted on said tubular portion of the head, and

a passageway from the space between the bearing and seal to the space outside the delivery pipe.

, 9. In a pump, thecombination of a hollow base adapted to be mounted on a support, a head mounted on the base and. having an internal chamber, a deliveryv pipe communicating with said chamber, a discharge chamber in the base communicating with the chamber in the head and having a discharge orifice, a discharge pipe secured to the base at the discharge orifice thereof, a delivery pipe carried by said head and extending downwardly beyond the base, a pumping unit at the lower end of the delivery pipe, a driving shaft having a bearing on the head and extending downwardly through the delivery pipe to a rotary member of a pumping unit, a packing seal between the head and driving shaft, and a draining passageway from the space between the shaft bearing and the rotary seal leading to the space outside the delivery pipe.

BERNARD SAMELSO'N. 

